Abstract: Seismic-while-digging exploration technology is one of the important exploration means in the intelligent development of coal roadway. Compared with the traditional exploration technology, it has the advantages of safety, high efficiency and synchronous exploration, which can improve the production efficiency and ensure the safety of mining production. According to the characteristics of the seismic-while-digging source, the stress mode of the cutting head of the boring machine is studied, and the force analysis is carried out. The real data of the seismic source is loaded into the three-dimensional fault model for forward simulation, and the correlation conclusions of radial, transverse and vertical components are obtained( the radial, transverse and vertical components are collectively referred to as x, y and z components); on the basis of the force analysis of source of the seismic-while-digging, a Ricker wavelet point source is loaded on each point of force, and a single shot source is simulated to verify the effectiveness of cross-correlation processing of the following excavation seismic records. The results show that the effect of cross-correlation processing of x-component is poor, and the waveform of single shot recording is complete after cross-correlation processing of y-component and z-component; the energy of refracted shear wave and Rayleigh channel wave is strong in the x component, and these two groups of waves interfere with each other in the excavated seismic records, which leads to the poor effect of cross-correlation pulse processing; in y-component, the energy of Love channel wave is strong, and the energy of other wave groups is weak. After cross-correlation pulsation processing, the Love channel wave can be separated from the digging record; on the z component, Rayleigh channel wave can be separated after cross-correlation processing with the seismic-while-digging records; when the fault drop of y and z components is less than the coal thickness, the larger the drop is, the more obvious the reflected wave is after the cross-correlation processing with seismic-while-digging records. The fault angle ranges from 45° to 90°, and the reflected wave energy changes little with the cross-correlation of y component of excavation records. The z component is that the smaller the fault angle, the smaller the reflected wave energy after cross-correlation with seismic-while-digging records.